Musnad Ahmad 32:649

Surayj and Yunus ibn Muhammad narrated to us, they said: Hammad narrated to us, from Thabit al-Bunani, from Anas ibn Malik, who said: The Messenger of Allah (peace and blessings of Allah be upon him) was with one of his wives, and a man passed by. He (the Prophet) said: "O so-and-so, this is my wife." The man said: "O Messenger of Allah, of whomsoever I might have had suspicion, I would not have had suspicion of you." He (the Prophet) said: "Indeed, Satan circulates in the son of Adam as blood circulates."